Provides weekday service between the CTA Blue Line Rosemont Station and Oakbrook Center in Oak Brook. Saturday and Sunday service operates between the CTA Blue Line Rosemont Station and Delta Cargo in the south cargo area of O'Hare International Airport. Serves the CTA Blue Line Rosemont Station, AMC O'Hare/P & D Center, Metra MD-West Line Bensenville Station (weekdays only), Metra UP-West Line Elmhurst Station (weekdays only), Elmhurst Memorial Hospital - Main Campus (weekdays only) and Oakbrook Center (weekdays only).